All of a sudden my Imac (running OSX 10.6.8) will not shutdown. I looked at some of the commands sent to my Imac during shutdown and many are Symantec related. At one time I had a Norton backup account through AOL and I didn't think it was still active. One command line says com.symantec.nobu.nobud ... /Library/Application Support/Norton Online Backup/Norton Online Backup.app/Contens/MacOS/nobud : no such file or directory. Another command line says (com.symantec.nou.nobud) Throttling respawn: Will start in 10 seconds. How do I get rid of these commands and find out if my account on AOL is still active. I so I would like to turn it off.